Issued: 2017 Dec 29 1230 UTC
Quiet conditions (<50% probability of C-class flares)
Quiet (A<20 and K<4)
Quiet
10cm flux | Ap | |
---|---|---|
29 Dec 2017 | 071 | 007 |
30 Dec 2017 | 072 | 007 |
31 Dec 2017 | 074 | 010 |
Solar activity was low, no C-class flares in past 24 h. There are no active regions visible on the solar disk. A CME was observed in LASCO-C2 starting at 23:12 UT on 28 December, directed towards the south east and associated with a B8.3 flare (peak 22:29 UT), behind the east limb. This CME is backsided and will not affect the Earth. No C-class flares expected (although this region behind the limb may change the situation).
Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed.
Solar wind speed is at 400 km/s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions have been quiet, and expected to remain so. There is a small positive coronal hole located at 30 degrees northern latitude which may affect the Earth in 48h, but its effect should be minimal.
Today's estimated international sunspot number (ISN): 000, based on 14 stations.
Wolf number Catania | /// |
10cm solar flux | 071 |
AK Chambon La Forêt | 010 |
AK Wingst | 006 |
Estimated Ap | 005 |
Estimated international sunspot number | 000 - Based on 29 stations |
Day | Begin | Max | End | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
---|---|---|---|---|---|---|---|---|---|---|
None |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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